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ATAN

Math & trig

Arctangent — the angle whose tangent is the number.

Syntax

ATAN(number)

Full notes for ATAN are still being written. Use the AI explainer below for the arguments, a worked example and common mistakes.

More Math & trig functions

ABSACOSACOSHACOTACOTHAGGREGATEARABICASINASINHATAN2ATANHBASE

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Syntax follows Microsoft’s documentation. Examples are written to be pasted into a cell and checked. Argument separators may be ; in your locale. The AI explainer runs on a free community model — verify anything important.